(19)

(11)

EP 1 740 283 A1

(12)

(43) Date of publication: 10.01.2007 Bulletin 2007/02 (21) Application number: 04812499.4 (22) Date of filing: 01.12.2004

(51) International Patent Classification (IPC):  B01D 3/42(2006.01) C02F 1/04(2006.01) (86) International application number: PCT/US2004/039991 (87) International publication number: WO 2005/056154 (23.06.2005 Gazette 2005/25)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR (30) Priority: 02.12.2003 US 526530 P (71) Applicant: Sylvan Source, Inc. Menlo Park, CA 94025 (US)	(72) Inventors: THOM, Douglas, M. Woodside, CA 94062 (US) LUM, Gary, W. Cupertino, CA 95014 (US) (74) Representative: Williams, Richard Andrew Norman  Harrison Goddard Foote 40-43 Chancery Lane London WC2A 1JA London WC2A 1JA (GB)